Masters Theses


"This thesis involves two comparative analysis studies of helical anchor design methodologies and the recommendation of design equations and design factors of safety for Earth Contact Products. The first comparative analysis is a parametric study of three competitive helical anchor manufacturers’ methodologies: A. B. Chance Company, Atlas Systems, Inc., and Dixie Anchoring Systems. Recommendations for Earth Contact Products’ design equations are made based upon the results of this study. The second comparative analysis studied the behavior of the recommended design equations using finite element analysis with the computer code Plaxis. Recommendations for minimum factors of safety in cohesionless and cohesive soils are made based upon settlement criteria and the results of the Plaxis analysis.

This project as a whole is the result of a contract between Earth Contact Products and the University of Missouri-Rolla. Earth Contact Products is a manufacturer of helical anchors and various other steel products. A design and construction manual has been developed for Earth Contact Products based on the results of this thesis and is included on CD-ROM as Appendix B. Later phases of this project involve the development of computer design software and the study of the buckling capacity and lateral capacity of helical anchors"--Abstract, page ii.


Stephenson, Richard Wesley

Committee Member(s)

Luna, Ronaldo
Rogers, J. David


Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering


Earth Contact Products
University of Missouri--Rolla. University Transportation Center Program


Accompanying CD-ROM, available at Missouri S&T Library, contains Appendix B, Helical Anchor Design Manual. This material is available here for download as supplementary material.


University of Missouri--Rolla

Publication Date

Summer 2003


x, 67 pages

Note about bibliography

Includes bibliographical references (pages 63-66).


© 2003 Rachel Jeanne Schiller, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Anchorage (Structural engineering)
Structural stability
Engineering design -- Methodology

Thesis Number

T 8284

Print OCLC #


Electronic OCLC #


Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Schiller_Rachel_2003_Appendix_B_ECP Helical Anchor Design Manual.pdf (520 kB)
Design and installation of torque anchors for tiebacks and foundations

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